From 3decfa6eefa28eed8521e9ee8a468e8e644255c1 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Fri, 7 Nov 2014 08:48:15 -0800
Subject: [PATCH] USB: cdc-acm: check for valid interfaces

commit 403dff4e2c94f275e24fd85f40b2732ffec268a1 upstream.

We need to check that we have both a valid data and control inteface for both
types of headers (union and not union.)

References: https://bugzilla.kernel.org/show_bug.cgi?id=83551
Reported-by: Simon Schubert <2+kernel@0x2c.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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Reading git-format-patch failed